US3641095A - Bonded low-alumina mordenite - Google Patents
Bonded low-alumina mordenite Download PDFInfo
- Publication number
- US3641095A US3641095A US872408A US3641095DA US3641095A US 3641095 A US3641095 A US 3641095A US 872408 A US872408 A US 872408A US 3641095D A US3641095D A US 3641095DA US 3641095 A US3641095 A US 3641095A
- Authority
- US
- United States
- Prior art keywords
- mordenite
- silica
- alumina
- pellets
- bonded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052680 mordenite Inorganic materials 0.000 title abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 35
- 239000000377 silicon dioxide Substances 0.000 abstract description 14
- 229960000892 attapulgite Drugs 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- 229910052625 palygorskite Inorganic materials 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- -1 AMMONIUM IONS Chemical class 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 12
- 239000008188 pellet Substances 0.000 description 12
- 239000004927 clay Substances 0.000 description 4
- 239000008119 colloidal silica Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical class [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 125000004436 sodium atom Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
Definitions
- This invention relates to bonded agglomerates of high silica mordenite.
- Mordenite is one of the molecular sieve zeolites which has been found useful in various gas separation, ion exchange, and catalytic applications. Mordenite occurs naturally and has been synthesized; such mordenite is a metallo-alumino-silicate having a silica to alumina ratio of from 9:1 to 11:1. A particular property of mordenite is its ability to have substantial portions of the alumina removed by chemical treatment while still retaining its crystalline form. Thus acid leaching as disclosed in Sand Pat. 3,436,174, can be employed to produce leached mordenites having a silica to alumina ratio as high as 50/1. Calcination of hydrogen exchanged mordenite, followed by acid leaching, as disclosed in US. application Ser. No. 754,646, now abandoned, can achieve silica to alumina mole ratios of 100 to 1 and higher, with the zeolite crystal structure of the mordenite being retained.
- Such highly siliceous mordenites are useful as catalysts in hydrocarbon conversion reactions. For most such applications it is desirable to utilize the material in the form of bonded pellets.
- One way of producing such pellets has been the use of clay-type bonding agents, the attapulgite type clays, which may contain minor proportions of bentonite, being particularly useful in connection with the bonding of mordenites having a silica to alumina ratio of between 9 to 11 and 11 to 1.
- the present invention resides in the discovery that the addition of from /2 to 20% of colloidal silica, in the form of an ammonium ion stabilized aqueous dispersion, results in bonded pellets of suitable activity, strength, and attrition resistance.
- Mixture A by weight of the acid leached mordenite and 20% of bonding clay.
- Mixture B Silica, in the form of Ludox AS, ammonium stabilized colloidal silica (available from E. I. du Pont de Nemours and Company, Inc., Wilmington, Del.) was added to Mixture A in the amount of 3%, by weight, calculated as SiO Mixture C: In this mixture some of the bonding clay was replaced by an equal weight of SiO;,. The mixture was:
- Attrition loss of the pellets was determined by measuring the weight loss incurred when a sample of the pellets is fluidized in a stream of dry air for one hour.
- Mixture A has a loss of 3.4%
- Mixture B a loss of 1.5%
- Mixture C a loss of 0.3%, by weight.
- pellets of the present invention may be impregnated with a noble metal such as palladium and employed as a hydrocracking catalyst.
- the firing temperature may vary between 400 and 700 C.
- a method of bonding mordenite powder having a silica to alumina mole ratio above 20 to 1, comprising mixing said mordenite with a clay bonding agent including from /2 to 20% of silica, said silica being added as an aqueous, ammonium stabilized, colloidal dispersion, and firing said pellets to mature the bond.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87240869A | 1969-10-29 | 1969-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3641095A true US3641095A (en) | 1972-02-08 |
Family
ID=25359510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US872408A Expired - Lifetime US3641095A (en) | 1969-10-29 | 1969-10-29 | Bonded low-alumina mordenite |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3641095A (enrdf_load_stackoverflow) |
| JP (1) | JPS4837513B1 (enrdf_load_stackoverflow) |
| FR (1) | FR2066604A5 (enrdf_load_stackoverflow) |
| GB (1) | GB1287986A (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253989A (en) * | 1978-04-14 | 1981-03-03 | Filtrol Corporation | Zeolitic catalyst and method of producing same |
| US4529416A (en) * | 1983-02-11 | 1985-07-16 | Air Products And Chemicals, Inc. | Gas separation kinetics in commercial pellets |
| US4548913A (en) * | 1982-12-16 | 1985-10-22 | Bayer Aktiengesellschaft | Catalyst, a process for its preparation and an isomerization process in the presence of this catalyst |
| US20220030824A1 (en) * | 2018-09-25 | 2022-02-03 | Church & Dwight Co., Inc. | Animal litters exhibiting enhanced odor reduction properties, and related methods |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101360474B1 (ko) * | 2011-08-31 | 2014-02-11 | (주)엘지하우시스 | 복합 게터제를 포함하는 진공 단열재 |
-
1969
- 1969-10-29 US US872408A patent/US3641095A/en not_active Expired - Lifetime
-
1970
- 1970-10-20 GB GB4976470A patent/GB1287986A/en not_active Expired
- 1970-10-27 FR FR7038730A patent/FR2066604A5/fr not_active Expired
- 1970-10-27 JP JP45094611A patent/JPS4837513B1/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253989A (en) * | 1978-04-14 | 1981-03-03 | Filtrol Corporation | Zeolitic catalyst and method of producing same |
| US4548913A (en) * | 1982-12-16 | 1985-10-22 | Bayer Aktiengesellschaft | Catalyst, a process for its preparation and an isomerization process in the presence of this catalyst |
| US4529416A (en) * | 1983-02-11 | 1985-07-16 | Air Products And Chemicals, Inc. | Gas separation kinetics in commercial pellets |
| US20220030824A1 (en) * | 2018-09-25 | 2022-02-03 | Church & Dwight Co., Inc. | Animal litters exhibiting enhanced odor reduction properties, and related methods |
| US12250921B2 (en) * | 2018-09-25 | 2025-03-18 | Church & Dwight Co., Inc. | Animal litters exhibiting enhanced odor reduction properties, and related methods |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2066604A5 (enrdf_load_stackoverflow) | 1971-08-06 |
| JPS4837513B1 (enrdf_load_stackoverflow) | 1973-11-12 |
| DE2055476B2 (de) | 1972-08-24 |
| GB1287986A (enrdf_load_stackoverflow) | 1972-09-06 |
| DE2055476A1 (de) | 1971-05-13 |
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